/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package Servlets;

import Beans.Ciudad;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.LinkedList;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.UnavailableException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Marco
 */
public class ListarCiudadesS extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    private Connection con;
    
    public void init() throws ServletException{
        try{
            Class.forName("com.mysql.jdbc.Driver").newInstance();
            con=DriverManager.getConnection("jdbc:mysql://localhost/Agencia","root","root");
        }
        catch(Exception ex){
            throw new UnavailableException("Error: "+ex.getMessage());
        }
    }
    
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        LinkedList<Ciudad> lista=new LinkedList<>();
        try{
            PreparedStatement ps= con.prepareStatement("SELECT * FROM Ciudad");
            ResultSet rs=ps.executeQuery();
            while (rs.next()){
                Ciudad c=new Ciudad(rs.getString("Nombre"), rs.getString("Pais"), rs.getString("IdiomaOf"));
                c.setCodCiudad(rs.getInt("CodCiudad"));
                lista.add(c);
            }
            request.setAttribute("listaC",lista);
            RequestDispatcher dispatcher=request.getRequestDispatcher("ListaCiudad.jsp");
            dispatcher.forward(request, response);
        }
        catch(SQLException ex){
            throw new UnavailableException("Error: "+ex.getMessage());
        }
        catch(Exception ex){
            throw new UnavailableException("Error: "+ex.getMessage());
        }  
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

    private Exception UnavailableException(String string) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

}
